Color filter substrate, liquid crystal display, and electronic device, and method for manufacturing color filter substrate and method for manufacturing liquid crystal display

Abstract

A color filer substrate composing a liquid crystal display by sandwiching a liquid crystal with an opposite substrate having a plurality of pixel electrodes includes a first partition wall surrounding a plurality of color element areas on the color filter substrate, a second partition wall partitioning each of the plurality of color element areas into a plurality of areas, and plural types of color elements formed in the plurality of color element areas, wherein the second partition wall is formed so as to protrude further than the color element and the protruding portion also serves as a protrusion for controlling the orientation of a molecule of the liquid crystal.

1 . A color filer substrate composing a liquid crystal display by sandwiching a liquid crystal with an opposite substrate having a plurality of pixel electrodes, comprising: 
 a first partition wall surrounding a plurality of color element areas on the color filter substrate;    a second partition wall partitioning each of the plurality of color element areas into a plurality of areas; and    a plurality of color elements formed in the plurality of color element areas,    wherein the second partition wall is formed so as to protrude further than the color element in the height direction and the protruding portion also serves as a protrusion for controlling the orientation of a molecule of the liquid crystal.    
   
   
       2 . The color filter substrate according to  claim 1 , wherein the color element is formed by ejecting a function liquid including a color element forming material onto the color element area.  
   
   
       3 . The color filter substrate according to  claim 1 , wherein the second partition wall is formed so as to be 1 to 2 micrometers higher than the first partition wall and the color element has approximately the same film thickness as that of the first partition wall.  
   
   
       4 . The color filter substrate according to  claim 1 , wherein the top of the second partition wall is curved.  
   
   
       5 . A liquid crystal display, comprising: 
 a color filter substrate according to  claim 1;     an opposite substrate having a plurality of pixel electrodes corresponding to the plurality of color element areas on the color filter substrate; and    a liquid crystal sandwiched between the color filter substrate and the opposite substrate,    wherein the respective surfaces of the color filter substrate and the opposite substrate facing the liquid crystal are provided with an orientation film for orienting the molecule of the liquid crystal approximately perpendicular to the respective surfaces.    
   
   
       6 . The liquid crystal display according to  claim 5 , wherein the pixel electrode is provided with an aperture opening toward the color filter substrate in parallel with the second partition wall in positions corresponding to the plurality of areas formed by partitioning each of the plurality of color element areas by the second partition wall.  
   
   
       7 . An electronic device, wherein the liquid crystal display according to  claim 5  is installed.  
   
   
       8 . A method for manufacturing a color filter substrate having plural types of color elements in a plurality of color element areas surrounded on a substrate, comprising: 
 forming a first partition wall so that the first partition wall surrounds the plurality of color element areas on the substrate;    forming a second partition wall so that the second partition wall partitions each of the plurality of color element areas into a plurality of areas; and    forming plural types of color elements by ejecting plural types of function liquids including different color element forming materials onto the plurality of color element areas,    wherein in the second partition wall forming step, the second partition wall is formed so as to protrude further than the first partition wall in the height direction.    
   
   
       9 . The method for manufacturing a color filter substrate according to  claim 8 , wherein in the color element forming step, the function liquids are ejected so that the first partition wall and the color elements have approximately the same film thickness.  
   
   
       10 . The method for manufacturing a color filter substrate according to  claim 8 , further comprising: 
 applying liquid repellent treatment to the substrate surface so that the substrate surface is liquid repellent; and    applying lyophilic treatment to the substrate surface subjected to liquid repellent treatment, corresponding to an area in which the first partition wall is formed and an area in which the second partition wall is formed, so that such a substrate surface is lyophilic,    wherein in the first partition wall forming step and the second partition wall forming step, the first partition wall and the second partition wall are formed by ejecting a function liquid including a partition wall forming material onto the substrate surface subjected to lyophilic treatment.    
   
   
       11 . The method for manufacturing a color filter substrate according to  claim 8 , further comprising: 
 applying liquid repellent treatment to the substrate surface on which the first partition wall is formed so that such a surface is liquid repellent; and    applying lyophilic treatment to the substrate surface subjected to liquid repellent treatment, corresponding to the area in which the second partition wall is formed, so that such a surface is lyophilic,    wherein in the second partition wall forming step, the second partition wall is formed by ejecting a function liquid including a partition wall forming material onto the substrate surface subjected to lyophilic treatment.    
   
   
       12 . The method for manufacturing a color filter substrate according to  claim 10 , wherein in the liquid repellent treatment step, a liquid repellent thin film is formed on the substrate surface, and in the color element forming step, at least the thin film remaining in the color element area is eliminated.  
   
   
       13 . The method for manufacturing a color filter substrate according to  claim 10 , wherein in the lyophilic treatment step, at least the substrate surface subjected to liquid repellent treatment, corresponding to the area in which the second partition wall is formed is irradiated with a ray so as to be lyophilic.  
   
   
       14 . A method for manufacturing a liquid crystal display including a color filter substrate having plural types of color elements, an opposite substrate having a plurality of pixel electrodes corresponding to the plural types of color elements, a liquid crystal sandwiched between the color filter substrate and the opposite substrate, and an orientation film provided on the respective surfaces of the color filter substrate and the opposite substrate facing the liquid crystal for orienting a molecule of the liquid crystal approximately perpendicular to the respective surfaces, wherein the color filter substrate is manufactured using the method for manufacturing a color filter substrate according to  claim 8.